Brian, you got an awful lot to say here.

Most I don't understand and the rest I disagree with... but lets just talk about one item:
[quote=Brian Hughes]...
The good news is that DAW plugin follows the tempo map that has varied tempo changes just fine.
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I am including a picture of what I am doing. There is a track of EZ drummer midi which is following the DAW tempo map above it. The BIAB plugin is synced to the DAW following the same tempo map. You can see in the plugin under the tempo is the new tempo it is following and is in perfect sync with my EZ drummer track which is using the changes in the tempo map.
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This is from PGmusic:
The latest version of the Band-in-a-Box® DAW Plugin introduces powerful new features compatible with all DAWs. It offers fast, ".WAV-less" generation, enabling tracks to play directly from disk without generating .WAV files. Sync playback seamlessly with your DAW—such as Presonus Studio One or Pro Tools—including support for floating-point tempo changes, allowing you to quickly change styles while working on your project, and more!